Abstract: The polymer solution was verified based on the analysis of testing data of rheology of polymer solution, whose molecular weight is 17 millions, which has pseudoplastic rheological behavior of power-law fluid when the injection rate of individual well is smaller than 500 m3/d. The effect of concentration was analyzed on the rheological behavior of polymer solution. The variable laws of apparent viscosity, fluid index n, and consistency coefficient k was described with concentration of polymer solution.